Achievement badges are used by many chapters, but are not required to participate or advance.  Many chapters use badges as a focus for meetings or gatherings and many kids like the concrete accomplishment and reward badges provide. 

Navigator badges are divided into the four Compass Points designated by the color of the border stitching (Mind/blue, Body/red, Planet/green, Freedom/white). 

Each subject has three levels, designated by the background color (Stargazer/light green, Junior/dark green, Senior/blue) There are also mastery badges and badges for safety skills such as knife skills, bravery, etc.

See all badges below

Mind

Mind Mastery
Arts & Craft
Coding
Cooking
Engineering
Games
Hobbies
Knots
Map & Compass
Math
Media Communications
Mindcraft
Money Matters
Performing Arts
Photography Videography
Religion
Science
Tech & Design
Photography Videography

Body

Body Mastery
Adventure Sport
Archery
Boating
Climbing
Cycling
First Aid
Hiking
Paddle Sport
Math
Swimming
Wellness
White Water
Wilderness First Aid
Winter Sports
Yoga

Planet

Planet Mastery
Bugs
Campcraft
Camping
Conservation
Discovery
Fishing
Gardening
Geocache
Pets
Recycling
Water Conservation
Weather
Wilderness First Aid

Freedom

Planet Mastery
Communication
Diversity
First Nation
Flight & Space
Heritage
Leadership
Navigators Around the World
Safety
Search & Rescue
Service Learning
Social Justice